CN203669826U - Oilfield underground paraffin prevention tool - Google Patents
Oilfield underground paraffin prevention tool Download PDFInfo
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- CN203669826U CN203669826U CN201320854472.4U CN201320854472U CN203669826U CN 203669826 U CN203669826 U CN 203669826U CN 201320854472 U CN201320854472 U CN 201320854472U CN 203669826 U CN203669826 U CN 203669826U
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- active body
- outer tube
- inner active
- well
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Abstract
The utility model discloses an oilfield underground paraffin prevention tool. The paraffin prevention tool is composed of an outer casing pipe and an inner active body, wherein the outer casing pipe is about 60 mm in diameter and is 600 mm in length, the lower end of the outer casing pipe is closed, and through grooves each of which is 300 mm in length and 5 mm in width are evenly distributed in the wall of the outer casing pipe from the lower end face in the axial direction; the inner active body is formed by three cylinders each of which is 190 mm in length, hollow grooves are radially and evenly distributed in the periphery of the inner active body in the radial direction, the total cross sectional area of each hollow groove is controlled to be 90% the total area of each through groove in the wall of the outer casing pipe, and every two cylinders of the inner active body are separated from each other through a phi 50*10*5 mm red copper circular ring. The paraffin prevention tool can effectively prevent or delay coagulation of paraffin on the pipe wall or a sucker rod, thereby prolonging an oil well washing cycle. By means of the paraffin prevention tool, crude oil production efficiency is improved, and pollution caused by conventional hot well washing or chemical well washing is avoided as well. The paraffin prevention tool has broad application prospects due to remarkable economic significance and social significance. A method of the paraffin prevention tool includes the steps of underground oil extraction and surface crude oil transport.
Description
Technical field
The utility model relates to oil extraction instrument, and a kind of wax control instrument with wax control function is provided.
Background technology
In the crude oil in many oil fields, all contain wax, crude oil from the underground process that is pumped to ground because temperature constantly reduces, after being dissolved in wax in crude oil is reduced to wax drop out point (generally 40 ℃ of left and right) in temperature, can separate out solid-state wax, condense on sucker rod and oil well tube wall, cause the pipeline blockage of pumping, must carry out " well-flushing " and could continue oil pumping operation to remove the wax condensing.The period of removing the wax of most wells was at one month or a wheat harvesting period, the most frequently used method of well-flushing is that heat is washed or paraffin removing with chemical method, above method is no doubt effective, but must stop oil producing operation and experience a couple of days normal produce oil operation again after the drainage period of (being generally 5 days), the serious crude oil production efficiency that reduces, there is the discharge of a large amount of chemical substances, contaminated environment simultaneously.In the ground system (oil pipeline and crude Treatment system) of crude oil production, also there is same clear wax control problem.
Utility model content
The purpose of this utility model is to provide a kind of oil field well wax control instrument, adopt special construction and metal material to there is special electro-chemical activity, effectively the separating out and condense of wax in crude oil for inhibiting, therefore can extend oil well paraffin removal duty cycle, improves oil well production efficiency.
For achieving the above object, the technical solution adopted in the utility model is: this one oil field well wax control instrument, wherein: described wax control instrument is made up of outer tube and inner active body, outer tube diameter 60mm, length 600mm, its lower end closed, there is screw thread at upper end open place in order to be connected with union, outer tube wall from lower surface has length 300mm, the penetrating fluting of width 5mm, radially be uniformly distributed, it is the passage of crude oil entering tool, described inner active body is the cylinder active body of three joint length 190mm, its surrounding is radially uniform-distribution with dead slot radially, that crude oil enters the backward mobile passage of outer tube, total cross-sectional area of dead slot is about 90% of the overcoat tube wall groove gross area, the red copper annulus of every two pitch cylinders external diameter for active body × highly × thickness=Φ 50 × 10 × 5mm separately, when the material of described outer tube and inner active body is looked use, well depth and crude oil liquid form and difference: 1., in the time of well depth≤5000m, outer tube is 1Cr18Ni9, and inner active body is copper alloy HCu62 or HSn70-1, 2. in the time of well depth >=5000m, outer tube is 0Cr17Ni12Mo2, and inner active body is copper alloy BZn15-21-1.8, and while 3. containing barium salt/strontium salt in crude oil liquid, outer tube material is 0Cr17Ni12Mo2N, and inner active body is copper alloy BZn15-20.
Described wax control instrument is serially connected in the lower end of oil well pump in oil well while use, can need to singly only use or 2 or many serial connection uses according to wax control.
The utility model adopts radially equally distributed length 300mm, the penetrating fluting of width 5mm, the cylinder active body of three joint length 190mm, its surrounding is radially uniform-distribution with dead slot radially, that crude oil enters the backward mobile passage of outer tube, total cross-sectional area of dead slot is about 90% of the overcoat tube wall groove gross area, the red copper annulus of every two pitch cylinders external diameter for active body × highly × thickness=Φ 50 × 10 × 5mm separately, crude oil is fully contacted with copper alloy, utilize the electro-chemical activity difference of paraffin in copper alloy and crude oil, changing after crude oil is in contact with it changes the rest potential of paraffin molecule in crude oil, thereby the fine wax crystal of separating out in crude oil is flowed out with crude oil liquid in the suspended state disperseing, avoid condensing into bulk and blocking pipeline, effectively prevent and delay wax at tube wall, condensing on sucker rod, thereby extend the clean-out service cycle of oil well.Being applied in of this wax control instrument also can be avoided the wash/pollution that chemical well-flushing causes of conventional heat when improving crude oil production efficiency, significant economy and social effect will make it have wide application prospect, comprise downhole crude exploitation and ground crude oil transportation.
The wax control instrument that the utility model provides, has following outstanding advantages:
(1) efficient: wax control result is obvious, can make period of removing the wax extend to more than 6 months from a wheat harvesting period, compared with using paraffin removal and control method machinery or physics, use wax control special alloy for oil well paraffin prevention, can significantly extend the snaking cycle, significantly reduce the time of the operation that stops pumping;
(2) energy-conserving and environment-protective: do not need any extra energy supply, do not discharge completely;
(3) easy to use: easy for installation, need hardly to safeguard;
(4) inexpensive long-acting: low cost of manufacture, can be used for a long time.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the specific embodiment of the present utility model is described in further detail.
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the structural representation of inner active body.
The specific embodiment
A kind of oil field well wax control instrument as shown in Figure 1, described wax control instrument is made up of outer tube 2 and inner active body 3, outer tube diameter 60mm, length 600mm, its lower end closed, there is screw thread at upper end open place in order to be connected with union 1, outer tube wall from lower surface has length 300mm, the penetrating fluting of width 5mm, radially be uniformly distributed, it is the passage of crude oil entering tool, described inner active body is the cylinder active body of three joint length 190mm, be respectively the first cylinder active body 4, the second cylinder active body 6, three cylindrical active body 8, its surrounding is radially uniform-distribution with dead slot 9 radially, that crude oil enters the backward mobile passage of outer tube, total cross-sectional area of dead slot is about 90% of the overcoat tube wall groove gross area, the first red copper annulus 5 of every two pitch cylinders external diameter for active body × highly × thickness=Φ 50 × 10 × 5mm and the second red copper annulus 7 are separately, when the material of described outer tube and inner active body is looked use, well depth and crude oil liquid form and difference: 1., in the time of well depth≤5000m, outer tube is 1Cr18Ni9, and inner active body is copper alloy HCu62 or HSn70-1, 2. in the time of well depth >=5000m, outer tube is 0Cr17Ni12Mo2, inner active body is copper alloy BZn15-21-1.8,3. while containing barium salt/strontium salt in crude oil liquid, outer tube material is 0Cr17Ni12Mo2N, inner active body is copper alloy BZn15-20, and the composition of overcoat and inner part material and impurity meet respectively GB [GB1220-92[84]] and the regulation of [GB5232-85].
Described wax control instrument is serially connected in the lower end of oil well pump in oil well while use, can need to singly only use or 2 or many serial connection uses according to wax control.
The application 1 of the oil field well wax control instrument of employing said structure under oil well:
1300 meters of oil well depths, 4.9 tons/day of oilwell produced fluid amounts, wax content 14.5%, moisture content 66%, former employing heat is washed, and period of removing the wax 45 days uses wax control instrument (outer tube 1Cr18Ni9, inner active body HCu62) 1, and period of removing the wax extends to 258 days.
The application 2 of the oil field well wax control instrument of employing said structure under oil well:
Approximately 4500 meters of oil well depths, 8.1 tons/day of oilwell produced fluid amounts, moisture content 72%, paraffin content 20.1%, former employing hot-washing wax remover, hot washing period 35 days, uses wax control instrument (outer tube 1Cr18Ni9, inner active body HSn70-1) 2, and period of removing the wax extends to 277 days.
The application 3 of the oil field well wax control instrument of employing said structure under oil well:
5100 meters of oil well depths, 4.7 tons/day of oilwell produced fluid amounts, moisture content 49%, wax content 14%.
Former employing paraffin removing with chemical method, 35 days times between well-flushings, adopts wax control instrument (outer tube 0Cr17Ni12Mo2, inner active body BZn15-21-1.8) 2, and period of removing the wax extends to 219 days.
The application 4 of the oil field well wax control instrument of employing said structure under oil well:
4500 meters of oil well depths, 6.6 tons/day of oilwell produced fluid amounts, moisture content 55%, has barium salt and strontium salt in wax content 18%. crude oil liquid.Former employing paraffin removing with chemical method, 30 days times between well-flushings, adopts 2 serial connections of wax control instrument (outer tube 0Cr17Ni12Mo2N, inner active body BZn15-20), and period of removing the wax extends to 209 days.
Claims (2)
1. an oil field well wax control instrument, it is characterized in that: described wax control instrument is made up of outer tube and inner active body, outer tube diameter 60mm, length 600mm, its lower end closed, there is screw thread at upper end open place in order to be connected with union, outer tube wall from lower surface has length 300mm, the penetrating fluting of width 5mm, radially be uniformly distributed, it is the passage of crude oil entering tool, described inner active body is the cylinder active body of three joint length 190mm, its surrounding is radially uniform-distribution with dead slot radially, that crude oil enters the backward mobile passage of outer tube, total cross-sectional area of dead slot is about 90% of the overcoat tube wall groove gross area, the red copper annulus of every two pitch cylinders external diameter for active body × highly × thickness=Φ 50 × 10 × 5mm separately, when the material of described outer tube and inner active body is looked use, well depth and crude oil liquid form and difference: 1., in the time of well depth≤5000m, outer tube is 1Cr18Ni9, and inner active body is copper alloy HCu62 or HSn70-1, 2. in the time of well depth >=5000m, outer tube is 0Cr17Ni12Mo2, and inner active body is copper alloy BZn15-21-1.8, 3. while containing barium salt/strontium salt in crude oil liquid, outer tube material is 0Cr17Ni12Mo2N, and inner active body is copper alloy BZn15-20.
2. oil field well wax control instrument as claimed in claim 1, is characterized in that described wax control instrument is serially connected in the lower end of oil well pump in oil well while use, can need to singly only use or 2 or many serial connection uses according to wax control.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320854472.4U CN203669826U (en) | 2013-12-24 | 2013-12-24 | Oilfield underground paraffin prevention tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320854472.4U CN203669826U (en) | 2013-12-24 | 2013-12-24 | Oilfield underground paraffin prevention tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203669826U true CN203669826U (en) | 2014-06-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320854472.4U Expired - Fee Related CN203669826U (en) | 2013-12-24 | 2013-12-24 | Oilfield underground paraffin prevention tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203669826U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103835680A (en) * | 2013-12-24 | 2014-06-04 | 张辉 | Underground paraffin control tool for oil field |
-
2013
- 2013-12-24 CN CN201320854472.4U patent/CN203669826U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103835680A (en) * | 2013-12-24 | 2014-06-04 | 张辉 | Underground paraffin control tool for oil field |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140625 Termination date: 20141224 |
|
| EXPY | Termination of patent right or utility model |